Denomination: 'PR0CN437'
Botanical Name: Brassica napus
Applicant/Holder: Bayer CropScience Inc.
Site 600, R.R. #6
P.O. Box 117
Saskatoon, Saskatchewan
S7K 3J9
Breeder: Stewart Brandt, Bayer CropScience Inc., Saskatoon, Saskatchewan
Application Date: 2011-07-19
Application Number: 11-7335
Protective direction granted: 2011-07-19
Grant of Rights Date: 2013-06-21
Certificate Number: 4560
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2015-06-21
Date rights surrendered: 2015-02-11

Variety Description

Varieties used for comparison: 'PPS98-274', 'PPS02-364' and '5030'

Summary: 'PR0CN437' has a smaller cotyledon than '5030'. The petiole of 'PR0CN437' is longer than 'PPS02-364'. 'PR0CN437' has a shorter silique than 'PPS98-274' and 'PPS02-364'. The beak of 'PR0CN437' is shorter than 'PPS98-274' and 'PPS02-364'. 'PR0CN437' has a shorter pedicel than 'PPS98-274'. At maturity, the plant height of 'PR0CN437' is shorter than '5030'. 'PR0CN437' has a lower protein content as a percentage of dried oil free meal than the reference varieties.


PLANT: male fertile restorer inbred line, spring type, short to medium height at maturity

COTYLEDON: narrow to medium width, short to medium length

LEAF: medium green, medium to many lobes, sharp margin, low to medium density of shallow to medium depth dentations, medium to long length, medium width, medium to long petiole

FLOWER PETAL: yellow, medium length, medium to wide width
SILIQUE: semi-erect to horizontal attitude, medium length, short to medium length beak, medium length pedicel
SEED: black

AGRONOMIC CHARACTERISTICS: fair to good resistance to lodging

QUALITY CHARACTERISTICS: erucic acid is 0.03% of total fatty acids, oil content is 47.9% of whole dried seed, protein is 42.7% of dried oil free meal, very low glucosinolates (6.59 µmol/g)

Origin & Breeding History: 'PR0CN437' is a restorer line in the process of F1 hybrid production. It was derived as a doubled haploid line 07-356-141 containing the Rf3 gene construct in homozygous state. The cross was made in 2006 with the doubled haploid line being extracted in 2007. 'PR0CN437' was selected in 2009 on the basis of fertility restoration of numerous male sterile lines and expression of tolerance to glufosinate-ammonium herbicide. Other selection parameters included height, vigour, maturity, blackleg resistance, oil content, fatty acid profile, glucosinolate content and combining ability.

Tests & Trials: Trials were conducted in the summers of 2010 and 2011 in Saskatoon, Saskatchewan. Plots each year consisted of 3 rows with a row length of 6 metres and a row spacing of 50cm. In 2010, the trial was set up as 8 x 9 lattice with 3 replications. In 2011, the trial was set up as a RCB Design with 3 replications. There were 40 measurements of the cotyledon characteristics, 30 of the leaf, flower and plant height characteristics and 60 for the silique characteristics. Means are based on a two year average. Differences are significant at the 2% probability level based on LSD values.

Comparison tables for 'PR0CN437' with reference varieties 'PPS98-274', 'PPS02-364' and '5030'

Cotyledon width (mm)

  'PR0CN437' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=4.3) 23.1 24.5 27.3 28.3
std. deviation 1.7 2.9 3.2 3.4

Cotyledon length (mm)

  'PR0CN437' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=2.5) 13.8 15.0 16.3 16.3
std. deviation 1.1 1.8 2.1 1.8

Petiole length (mm)

  'PR0CN437' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=23) 109 96 81 117
std. deviation 12 16 13 21

Silique length (mm)

  'PR0CN437' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=4.2) 58.0 66.2 62.4 60.3
std. deviation 4.5 5.6 5.6 4.9

Beak length (mm)

  'PR0CN437' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=2.6) 8.9 12.7 12.7 9.4
std. deviation 2.0 1.9 1.6 1.8

Pedicel length (mm)

  'PR0CN437' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=2.9) 18.4 21.3 16.8 18.9
std. deviation 2.9 2.5 2.5 2.7

Plant height at maturity (cm)

  'PR0CN437' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=7) 109 118 105 128
std. deviation 10 8 9 11

Protein content (% of dried oil free meal)

  'PR0CN437' 'PPS98-274' 'PPS02-364' '5030'
mean 42.7 49.2 47.9 45.7

Click on image for larger view
Canola: 'PR0CN437' (far left) with reference varieties 'PPS98-274' (centre left), 'PPS02-364' (centre right) and '5030' (far right)

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